Canonical: https://cooltimeusa.com/blogs/news/tagged/nasa # Stay-Cool Guides & Cooling Tips | CoolTimeUSA Blog ## NASA [RSS](https://cooltimeusa.com/blogs/news.atom) [**cooling neck ring**](https://cooltimeusa.com/blogs/news/tagged/cooling-neck-ring), [**history**](https://cooltimeusa.com/blogs/news/tagged/history), [**NASA**](https://cooltimeusa.com/blogs/news/tagged/nasa), [**PCM**](https://cooltimeusa.com/blogs/news/tagged/pcm) - June 25, 2026 ## [From NASA Spacesuits to Your Neck: The History of Phase-Change Cooling](https://cooltimeusa.com/blogs/news/nasa-history-of-pcm-cooling) How phase-change cooling traveled from a 1948 solar house and NASA-funded astronaut gloves to the chilled ring you wear on your neck. [**Read more**](https://cooltimeusa.com/blogs/news/nasa-history-of-pcm-cooling)